Disrupted in renal carcinoma protein 2 of the Major Facilitator Superfamily of transporters
Disrupted in renal carcinoma protein 2 or disrupted in renal cancer protein 2 (DIRC2), encoded by the SLC49A4 gene, was initially identified as a breakpoint-spanning gene in a chromosomal translocation associated with the development of renal cancer. It is an electrogenic lysosomal metabolite transporter that is regulated by limited proteolytic processing by cathepsin L. DIRC2 belongs to the Solute carrier 49 (SLC49) family of the Major Facilitator Superfamily (MFS) of transporters. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Feature 1:putative chemical substrate binding pocket [chemical binding site]
Evidence:
Comment:based on the structures of MFS transporters with bound substrates, substrate analogs, and/or inhibitors
Comment:since MFS proteins facilitate the transport of many different substrates including ions, sugar phosphates, drugs, neurotransmitters, nucleosides, amino acids, and peptides, the residues involved in substrate binding may not be strictly conserved among superfamily members
Comment:the substrate binding site or translocation pore has access to both sides of the membrane in an alternating fashion through a conformational change of the MFS transporter
Jiyao W et al.(2023). "The conserved domain database in 2023.",